Model: KR-A+
The new generation gasoline octane number tester adopts a new appearance design, with “One-Key” used to perform the test automatically and with the maximum knock liquid level searched automatically and accurately without manual operation. The instrument host uses a standard CFR single-cylinder four-stroke engine with a continuous variable compression ratio, to perform the test accurately and e ectively by the combination of the industrial control computer, Windows operating system, high-precision measurement and control elements and enrich peripheraldevices, having the auto display, saving and printing test report functions. The product is designed, manufactured and tested according to the
following standards:
ASTM D2700 (Motor Method) GB/T 503-2016 “Determination of Gasoline Octane Number (Motor Method)”
ASTM D2699-08 (Research Method) GB/T 5487-2015 “Determination of Gasoline Octane Number (Research Method)”
Instrument Features of Octane Tester
◆ Comply with CFR structure engine
– CFR standard cast iron integral cooling jacket; inblock casted cylinder body and cylinder cover.
– CFR standard crankcase; ve gears with dual balance modules.
– Right-mounted engine, and front turning system
◆ Perfect safety and protection function
– Engine features with soft startup, small start noise and auto run-away protection.
– With the level protection function for the circulating cooling water inside and outside the cooling water tower.
– The indicator used to display the instrument working status.
– The instrument is equipped with a wireless Wi and has a remote monitoring from the movable device, a remote test end alert and a remote data query.
– The engine running pressure negative pressure sensor for real-time display.
– Engine power indicator with digital screen display.
– Auto recording of the cumulative time of startup and test.
◆ Auto “One-Key” operation
– With the auto switching-over of oil cup; with the “One-Key” used to preform
test automatically
– Automatically and accurately nd out the maximum knock liquid level,
without manual search.
– With one machine for dual purposes; with the “One-Key” used to switch over
the Motor Method, Research Method and Test Method.
– With automatic compensation atmosphere pressure module, to ensure the
accuracy of test data.
◆ Accurate control system
– With the accurate compression ratio method test, the built-in work curve for
convenient and accurate test results.
– With the integrated control module, to monitor all working conditions of the
instrument in real time, with abnormity alarm function.
– With high-precision fuel negative pressure pipe (Vertical), fuel quantitative
pipe (Lateral) and air-fuel atomization pipe, to guarantee accurate control of
the oil intake amount of carburetor for stability of test data.
– The fuel negative pressure pipe and fourth oil cup carburetor has the refriger
ation function, to guarantee the light component oil test.
– With high-power dual-cycle air constant-temperature dryer, to e ectively
support the air intake of the large-bore engine.
– The machine is integrated with a control intake ice tower and external
circulating cooling water, to feedback the working status in real time.
– A laser displacement sensor is provided, without delay for adjustment, having
the limit safety protection function.
– With two-grade oil ltration and cooling function, the instrument can work
normally for a long time; with the oil emulsi cation detection function and
with an alarm issued to alert the user to replace oil automatically.
Technical Parameters of octane rating unit
– Octane number test range: 40~120
– CFR standard cast iron integral cooling jacket; inblock casted
cylinder body and cylinder cover
– Cast iron cylinder bore: 82.55mm (3.250in)
– Cast iron piston stroke: 114.3mm (4.50in)
– Cylinder capacity: 0.6L (37.33in3)
– CFR standard crankcase; ve gears with dual balance modules;
right-mounted engine; front turning system
– Main mechanical components such as integral cylinder, holder,
piston and carburetor components can be interchanged with those
of imported instrument.
– Compression ratio adjustment range: 4:1~8:1
– Engine speed: Motor Method: (900±9) r/min
Research Method: (600±6) r/min
– Valve clearance: Intake valve: 0.20mm;
exhaust valve: 0.20±0.025mm
– Spark plug clearance: 0.51±0.13mm
– Lubricant pressure: 172~207Kpa
– Lubricant temperature: 57±8℃
– Cylinder jacket coolant temperature: 100±1.5℃
– Mixed gas temperature (Motor Method): 149±1℃
– Intake temperature (Motor Method): 38±2.8℃
– Intake temperature (Research Method): 52±1℃ (at the standard
atmosphere pressure); corrected according to the atmosphere
pressure within ±1℃
– Ignition advanced angle (Real-time display):
Motor Method ε5.0 (26±1.5℃); adjusted by the computer automatically
Research Method (13º); xed
– High-power dual-cycle refrigeration ice tower; with 2-4℃ controlled
– High-power cooling water circulating machine; with the water tank
capacity of ≥60L; water pressure: 0.2~0.4MPa; working water
temperature: 15~25℃
– Power supply: AC380V±10%, 50Hz; AC220V±10%, 50Hz
– Machine power: 12KW; accessories power: 7KW
– Instrument size: 1780W x 900D x 1400H (mm)
– Machine weight: 1200kg
